The new cargo transporter to the International Space Station (HTV-X) is an unmanned spaceship under development to acquire a spacecraft system with the potential for improving transportation capability and operability, which can be utilized for various missions in the future, while maintaining KOUNOTORI’s superiority. The capacity and payload will be increased and it will become possible to load cargos up to 24 hours before launch and conduct experiments in orbit after the transportation of supplies. In addition, JAXA plans to transport supplies to the Lunar-Orbital Platform-Gateway under consideration.